Esri World Imagery vintage

[bhousel]

We can probably fetch imagery vintage for the Esri World Imagery layer, similar to how we can get it for Bing.

details here: https://www.arcgis.com/home/item.html?id=c03a526d94704bfb839445e80de95495

[jgravois]

source/vintage is absolutely something that can be queried and i'm happy to help land it as a feature in iD.

given that it'd invoke a new web request, my first instinct is to add a context menu item in the background settings panel when the Esri imagery is active.

[bhousel]

Thanks @jgravois!
The way I would approach this would be similar to how we fetch the Bing imagery vintage.

rendererBackgroundSource.Bing is special and it extends the generic rendererBackgroundSource, see here: https://github.com/openstreetmap/iD/blob/master/modules/renderer/background_source.js#L150

• So in that same file, you could make a renderBackgroundSource.Esri that is like the Bing one, but only has a single getVintage method.

• Then you'll need to update the init() code here:
  

  iD/modules/renderer/background.js

  Lines 244 to 248 in 28b5eff

  	if (source.type === 'bing') {
  	return rendererBackgroundSource.Bing(source, dispatch);
  	} else {
  	return rendererBackgroundSource(source);
  	}

add something like this:

  } else if (source.id === 'EsriWorldImagery') {
      return rendererBackgroundSource.Esri(source);
  }

[bhousel]

@jgravois I got this started for you in 1c9719d, while fixing #4327

[bhousel]

BTW to test this, just hit ⌘Cmd+Shift+B (on Mac) / Ctrl+Shift+B (on Windows) to bring up the Background info pane. This pane will display the vintage of the center tile, and there will be a button to toggle tile debugging info, to display vintage on all the tiles.

This feature is toggleable and off by default, so it won't flood the server with requests.